Rocklands Reservoir is the largest reservoir within GWMWater’s water supply system and is located on the Glenelg River. Originally constructed to supply the Wimmera-Mallee Domestic and Stock channel system, water held by Rocklands Reservoir is now used for many different purposes. A unique feature of Rocklands Reservoir is that all entitlement holders, including the environment, are able to be supplied with water from the reservoir.
For information on Rocklands Reservoir camping restrictions please visit https://www.ffm.vic.gov.au/media-releases/park-and-forest-closures
Water based recreation activities are popular.
This reservoir has six special location bouys installed adjacent to each of the six main camp grounds. These assist lake users locate their position on the lake.
Toilet facilities are available. Dogs are not permitted.
Swimming, water skiing and jet skiing is permitted at Rocklands Reservoir.
Seasonal duck hunting permitted.
| Current Level | 190.260 m AHD |
| Current Volume | 98,650 ML |
| Percent Full | 33% |
| Current Inflows | 348 ML/week |
| Current Airspace | 197,350 ML |
| Full Supply Level | 195.47 m AHD |
| Full Supply Volume | 348,310 ML |
| Maximum Operating Level (MOL) | 194.67 m AHD |
| Maximum Operating Volume | 296,000 ML |
| Spillway Length | 154.53 m |
| Spillway Capacity | 66,000 ML/day |
| Outlet Capacity | 280 to 600 ML/day |
| Catchment Area | 1,355 km2 |
| Surface Area When Full | 67.5 km2 |
| Major Tributary | Glenelg River |
| Average Annual Inflow | 83,000 ML/year |
| Maximum Depth | 17 m |
| Shoreline at full supply level | 156 km |
| Year Constructed | 1953 |